| 摘要 |
PCT No. PCT/GB90/00158 Sec. 371 Date Jul. 26, 1991 Sec. 102(e) Date Jul. 26, 1991 PCT Filed Feb. 2, 1990 PCT Pub. No. WO90/09543 PCT Pub. Date Aug. 23, 1990.A control device for a tiltable mounting head, such as the mounting head for a camera, includes a pantographic-type linkage. The angular position of an arm (24) supporting the mounting head (26) is controlled relative to a locating arm (12), whose remote end is pivoted to fixed structure (16) by three meshing gears, of which one (10) is connected to the locating arm (12) and another gear (20) is connected to the arm (24). The gears are rotatably mounted on a rigid arm (22) of the linkage of which an intermediate point (28) is constrained to move along a horizontal path. |
